If you look at the population for the top one hundred U.S. metropolitan areas, you get a population that is roughly two-thirds of the U.S. population (215 million of 320 million, using 2015 estimates).

Of these cities, Trump “carried” 64^{*} of them in the Electoral College; Clinton carried 36.

Remarkably, the population “carried” by each candidate differs by only 385,000 people (about a 0.18% difference).

^{*}Populations for some metropolitan statistical areas cross borders of states that each candidate won (e.g., the New York MSA extends into Pennsylvania; the Philadelphia MSA extends into New Jersey, Delaware and Maryland).